BOT = bolt on turbo ... i think you can get it at a cost of RM6-8K but it does not include the management or piston,fuel pump,oil pump,fuel regulator,metal gasket & etc.
Ok!Ok! let's just cost it up ... for upgrade to T/C to be on the safe egde .. piston need to be change to low compression so supercharge 4 cost saving(dunno price), metal gasket RM6++, fuel pump walbro (RM6++) OR you can install Bosch external fuel pump (RM3++), fuel regulator SARD(RM400 new),
VR4 injector (RM300 2nd hand), Oil Pump Type R (RM250 more or less 2nd hand but it's better to get new RM5++), turbine TD05+intercooler =(RM1+++ 2ND HAND), valve spring (RM300-400 Type R 2nd hand),intercooler piping (est RM1.1K),
wastegate (TIAL RM900), header (RM500 2nd hand), management E-Manage RM600-700 2nd hand excluding installation + tuning, BOV (RM300 2ND HAND), MTRS your choice = boost+exht temp+fuel pressure+water temp, lsd (RM1.5K), silicon hoses + labour charges + exhaust piping .... with this setup you can boost at least 1 bar .... u calculate and who says upgrading turbo is cheap even if you were to upgrade to NA performance spec it's even more expensive..... agree